In Lakewood, CO, right outside of Denver. Have a Comcast TG1682G Modem (their "Type 3") in Bridge Mode, and get wired connection of ~232 Mbps download from speedtest.xfinity.com. Had a WRT 1900 AC connected, with the same SSID and password for the 2.4 and 5 Ghz bands.
Both modem and router are in my utility room in the finished basement (we have ranch with finished basement family room). With router antennas straight up.
Both my iMac and MacBook (both running MacOS Sierra 10.12.5), and my iPhone 7+ and iPad Pro (both running iOS 10.3.2) ALWAYS and automatically connected to the 5 Ghz band while anywhere in the house, no problem. Wireless speeds on the computers were ~230 Mbps, on the iOS devices ~220 Mbps. I also have two printers, Epson photo and Brother Laser, connected wirelessly on 2.4 Ghz band (they don't do 5 Ghz) that worked fine with both computer printing as well as iOS AirPrint. And I was perfectly happy with it all.
Then, as we're moving to 4K, doing more streaming, and bought more computers and devices, I decided to buy the EA9500 (have the 1.1 version, and latest manually downloaded firmware from 5/8/17)...boy, oh, boy, I think I'm regretting that decision, but, want to know from the community...
I always manually setup my routers, and, had no issues initially setting it up. As with the WRT 1900, I setup both 5 & 2.4 Ghz bands with same SSID and password, and all other settings the same (going to the direct router address of 192.168.1.1, the settings are practically identical). After setting, I rebooted both router and modem, and connected them during the boot (as I've done in the past), and, when wireless connected, I was getting ~232 Mbps download as expected on my iMac. And, all devices behaved as normal...for a whole day.
Next day, speeds on everything were down to ~80 Mbps. Finally figured out the router to modem link was only doing 100 Mbps instead of the normal 1 Gbps, and even with a direct-connected Windows laptop and multiple reboots and IP Release/Renew no joy, so, called Comcast who came out and ended up replacing the modem.
EA9500 STILL only connected at 100 Mbps to the modem, even though direct-connected laptop connected at 1 Gbps, despite numerous reboots and IP Release/Renews, so, I ended up resetting the router and reconfiguring as per before (identical to the WRT 1900 AC) again.
Now, the router connects to the modem at 1 Gbps, all wired connections are fine with ~232 Mbps download speed, iMac connects to 5 Ghz band and gets same...but:
1. Epson photo printer on 2.4 Ghz band continues to work for a while, then, computers both MacOS and Windows 10 can't see it. Reboot of both or one or the other MAY restore connection, but, after a few hours it goes away again. I called Epson support and they told me that the printer on the 2.4 Ghz band won't be able to work with any devices on the 5 Ghz band (which sounds wrong, and, was NOT an issue for over 2 years with the WRT 1900 AC router).
2. While iMac and Windows computers, and iPad Pro connect automatically to 5 Ghz band all the time, the MacBook and iPhone 7+ keep getting the 2.4 Ghz band, sometimes switching to the 5 Ghz band, and then going back and forth.
I'm just about ready to send back the EA9500 as all these problems (except for the bad modem) are more problems then I've EVER had with LinkSys modem, and seeing all the low ratings of this router, am starting the form the opinion that it's just not ready for production use?
Any thoughts on what I need to do (reconfiguration, name the 2.4 & 5 Ghz bands with different SSID and password, get a new EA 9500, go back to the WRT 1900 AC, or...get a different LinkSys router)?
Thanks. SORRY for such a long read, but, wanted to make sure I had things accurately described.